The 10 string double violin, two bodies, two bows, one neck - a real-time performance by Jon that puts the instrument through its microtonal, rhythmic and harmonic paces. With a 20 pp exposition concerning Dr Rosenberg's researches into Payawipayan violin music and the didymous genetics of the Bati batis (2 days upstream) and the musical proclivities of the legendary Rosa and Josepha Bla_ek and a great deal more, which is terrifyingly literate, and funny.